The planting method of cotton which is difficult to open boll should be reformed.

In recent years, with the continuous deepening of the breeding of new cotton varieties, the improvement of sowing and seedling methods, as well as the improvement of agricultural mechanization, the planting mode of cotton field is very important for the high yield of cotton.

In the era of conventional cotton, cotton sowing is mainly direct seeding, cotton planting density is larger, cotton row spacing is smaller, cotton fertilization is more. When hybrid cotton is popularized and used in a large area, due to the large ontogeny of hybrid cotton, the density of cotton field decreases continuously, the row spacing of cotton expands, and most of the fertilization of cotton is changed to strip application or hole application. When the agricultural machinery gradually entered the cotton field, the cotton row spacing was further expanded, and the cotton fertilization was changed from shallow ditch to deep ditch. It can be seen that the way of fertilization has evolved with the continuous reform of planting methods.

When we investigate cotton production in large areas and multiple sites, we often encounter cases of contradiction between cotton fertilization and cotton planting patterns in the field. some farmers apply nitrogen fertilizer, and some farmers apply too much fertilizer at one time, which often causes cotton to flourish or grow excessively, resulting in premature closure of cotton rows and serious shade in cotton fields, resulting in a large number of cotton buds and bolls falling off, or because the cotton row spacing is narrow, the ventilation and light transmission conditions deteriorate after sitting peaches. The maturation time of cotton bolls is delayed and the floss is not smooth. Farmers often attribute the reason to the seed problem, wrangling with the cotton seed supply department and demanding compensation. On the other hand, the same cotton varieties show a high yield and a good harvest in the cotton fields with reasonable planting patterns, because these farmers' cotton has achieved scientific formula fertilization, the cotton row spacing is large, and the cotton field environment and growth trend are as follows: "the lower seal is not sealed, there is a gap in the middle, the sun can enter, the air can circulate, the leaves of small cotton peaches are big, and the plants are stable." the ecological environment of cotton itself is good, so there are many peaches and smooth bolting. The development of individuals and groups is relatively harmonious, and the combination of improved varieties and good methods can fully show the advantage of increasing production.

In the cotton area with large area of hybrid cotton, the continuous reform of planting mode is one of the effective ways to create reasonable living space and explore high yield of cotton. The advantages of the reform of planting methods are as follows: first, it is convenient for mechanical farming, which is conducive to deep ploughing, deep application of bottom fertilizer and high ridges to cultivate soil; second, it is convenient for field management such as fertilizer application, pest control, pruning and branching, etc.; third, it is convenient for drainage and drought resistance. enhance the ability of disaster resistance; fourth, cotton has large spatial distance, sufficient light, air circulation, high photosynthetic efficiency and fast production of nutrients; fifth, it can fully show the characteristics of hybrid cotton. Sixth, the peach is fast, the peach rate is high, the shedding rate is low, and the rotten peach is less, so it can have high quality and high yield.

At present, the planting area of hybrid cotton is relatively large, so it is necessary to narrow the behavior of wide rows and dense plants in the planting mode, and advocate the planting mode of wide rows and dense plants. where the fertility level is high, the box width should be 2.4m (including trench), and two rows of cotton should be planted with a row spacing of 1.2m, a plant spacing of 0.45m and 0.5m, and a density of about 1300 plants per mu. Where the fertility is medium, the third-class line can also be used, but the line spacing should not be less than 1 meter. Under the above planting methods, under a higher level of management, there are generally about 45 peaches per plant, 55000 to 65,000 per mu, and an average of 600 jin per mu of seed cotton is expected to be achieved. At present, autumn sowing production is imminent, and the cotton planting areas with large hybrid cotton planting in various places should sum up the experiences and lessons of cotton planting methods in time, and the planting methods in the coming year can be adjusted immediately, and they can also continue to make good adjustments in the relatively casual winter season.